OFFSET
1,1
EXAMPLE
a(3) = 11 and a(4) = 31 and the smallest prime of the form 11r + 31s is 53 for r = 2 and s = 1 hence a(5) = 53.
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Aug 02 2002
EXTENSIONS
More terms from Sascha Kurz, Feb 12 2003
STATUS
approved